I'm currently trying to breed super red brittleness plecos. I have two males and two females. One of the males and one of the females have bred in the shop (I saw it with my own eyes and a week later I bought them). The other two are still young. I have 3 caves (pleocs breed in caves) and a lot of driftwood in my tank, I feed them fresh veggies as often as I can (3 times per week) and algae wafers. I got these fish less then a month ago so no breeding yet but hopefully it happens soon. Today I did a massive cold water change and apparently this can encourage breeding because plecos breed in the rainy season.
The truth is that I don't really have a lot of experience but I did do a lot of research and I'm currently trying to breed them.
Hope this helps